Championship 4 field set after thrilling Martinsville race
Christopher Bell duplicated his heroics from three weeks ago by racing to the checkers in the NASCAR Cup Series' Round of 8 playoff finale, winning Sunday's wild Xfinity 500 at Martinsville Speedway in Martinsville, Virginia. The Joe Gibbs Racing driver's triumph set the Championship 4 field fornext Sunday's race at Phoenix Raceway. The 27-year-old Bell will be joined in the title hunt in the desert by Joey Logano, Ross